Micro-bubbles help

[shelleyBoston]

My tank has been up and running for about 3 weeks. The tank is a AIO Fusion Nuvo 20, with an upgraded circulation pump. I see micro-bubbles coming through the 2 nozzles into the main display tank. all plumbing in the back of the tank is underwater so I don't understand where the air is coming from. I thought at first it was an air bubble trapped in the circulation tubes or the pump itself but after 3 weeks still injects a lot of micro bubbles.
Any ideas?
:bounce1:

 

[soulpatch]

Are you running a skimmer?

 

[themagicman]

I'm not too familiar with your set up, but sometimes when a return pump is not submerged far enough it will create a whirpool type of effect and draw in some air. Is it constantly blowing out bubbles or does this happen in intervals?

 

[soulpatch]

pics would help. The description of the plumbing and all being underwater should negate that and one would hear it clearly as it happens. But who knows.

I am guessing an unbroken in skimmer though being as it is a new tank.

What all is in your filtration areas?

 

[shelleyBoston]

I am not using a skimmer, it happens at intervals is not constant, and the bubbles are tiny, i will take a picture later when i get home. I just didn't know where i should look for the root cause.


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[soulpatch]

if intermittent then magic is probably correct

 

[shelleyBoston]

I forgot to mention the pump is fully submerged and attached to the bottom of the sump via suction feet

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[soulpatch]

Being submerged doesnt mean it isnt making a water tornado to suck in air.

My return pump is in 7 inches of water but I had to put a downward facing 90 degree adaptor on it for it to stop sucking in water. It wasn't even making a tornado but just enough surface pull to bring in air.

 

[j_mazzy]

water tornado